1
Dennis R Jarnecke, Hyman Aaron Todres: Method and apparatus for beneficiating soils during vacuum excavation. Mark E Fejer, June 26, 2007: US07234252 (13 worldwide citation)

An apparatus for soil excavation having a vacuum hose, a vacuum holding tank and at least one air lance and/or water jet, in which a soil beneficiating agent is introduced into the soil during one or more of the steps of the vacuum excavation process.


2
Dennis R Jarnecke, Hyman Aaron Todres: Method and apparatus for beneficiating soils during vacuum excavation. Mark E Fejer, Gas Technology Institute, April 27, 2006: US20060086010-A1

An apparatus for soil excavation having a vacuum hose, a vacuum holding tank and at least one air lance and/or water jet, in which a soil beneficiating agent is introduced into the soil during one or more of the steps of the vacuum excavation process.